28069492 has 24 divisors (see below), whose sum is σ = 53766720. Its totient is φ = 12716160.

The previous prime is 28069487. The next prime is 28069493. The reversal of 28069492 is 29496082.

It is a super-2 number, since 2×28069492² = 1575792762276128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28069493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14908 + ... + 16684.

It is an arithmetic number, because the mean of its divisors is an integer number (2240280).

Almost surely, 2^28069492 is an apocalyptic number.

28069492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28069492 is a deficient number, since it is larger than the sum of its proper divisors (25697228).

28069492 is a wasteful number, since it uses less digits than its factorization.

28069492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28069492 is about 5298.0649297645. The cubic root of 28069492 is about 303.9099023167.

It can be divided in two parts, 28069 and 492, that added together give a 4-th power (28561 = 13⁴).

The spelling of 28069492 in words is "twenty-eight million, sixty-nine thousand, four hundred ninety-two".